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checkers-canvas
Commit 35e82255 authored by Vadym Gidulian's avatar Vadym Gidulian
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Added game board

parent 10ee8eae
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index.html
View file @ 35e82255
...@@ -3,8 +3,11 @@ ...@@ -3,8 +3,11 @@
<head> <head>
<meta charset="UTF-8"> <meta charset="UTF-8">
<title>Checkers</title> <title>Checkers</title>
<script defer src="script.js"></script>
</head> </head>
<body> <body>
<canvas id="game" width="800" height="800"></canvas>
</body> </body>
</html> </html>
\ No newline at end of file
script.js 0 → 100644
View file @ 35e82255
'use strict';
/**
* @author Vadym Gidulian, GVIA Group
*/
const canvas = document.getElementById('game');
var ctx;
const SIZE = canvas.width;
const THICK_BORDER = 10;
const WHITE_BORDER = 3*THICK_BORDER;
const BORDER = THICK_BORDER + WHITE_BORDER;
const SQUARE = (SIZE - 2 * BORDER) / 8;
const FONT = WHITE_BORDER;
const FONT_WIDTH = 0.6 * FONT;
init();
drawGameBoard();
function init() {
ctx = canvas.getContext('2d');
}
function drawGameBoard() {
// Borders
ctx.fillRect(0, 0, SIZE, SIZE);
ctx.clearRect(THICK_BORDER, THICK_BORDER, SIZE - 2*THICK_BORDER, SIZE - 2*THICK_BORDER);
ctx.strokeRect(BORDER, BORDER, SIZE - 2*BORDER, SIZE - 2*BORDER);
// Squares
for (var i = 0; i < 8; i++) {
for (var j = 0; j < 8; j++) {
if ((i + j) % 2) {
ctx.fillRect(BORDER + j*SQUARE, BORDER + i*SQUARE, SQUARE, SQUARE);
} else {
ctx.clearRect(BORDER + j*SQUARE, BORDER + i*SQUARE, SQUARE, SQUARE);
}
}
}
ctx.font = FONT + 'px serif';
var letters = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H'];
var numbers = ['1', '2', '3', '4', '5', '6', '7', '8'];
for (i = 0; i < 8; i++) {
ctx.fillText(letters[i], BORDER+SQUARE/2-FONT_WIDTH/2 + i*SQUARE, BORDER-FONT/6, FONT_WIDTH);
ctx.fillText(letters[i], BORDER+SQUARE/2-FONT_WIDTH/2 + i*SQUARE, SIZE-THICK_BORDER-FONT/6, FONT_WIDTH);
ctx.fillText(numbers[7-i], THICK_BORDER+(WHITE_BORDER-FONT_WIDTH)/2, BORDER+SQUARE/2+FONT/2 + i*SQUARE, FONT_WIDTH);
ctx.fillText(numbers[7-i], SIZE-BORDER+(WHITE_BORDER-FONT_WIDTH)/2, BORDER+SQUARE/2+FONT/2 + i*SQUARE, FONT_WIDTH);
}
}
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